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CVE-2005-4840
The Outlook Express Address Book control, when using Internet Explorer 6, allows remote attackers to cause a denial of service (NULL…
- 4.3MediumCVSS base score
- 11.5%Exploitation in 30 daysEPSS · top 3.9% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
The Outlook Express Address Book control, when using Internet Explorer 6, allows remote attackers to cause a denial of service (NULL dereference and browser crash) by creating the OutlookExpress.AddressBook COM object, which is not intended for use within Internet Explorer.
Timeline
ID reserved
By mitre
Published
- 17 years later
· 17 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium4.3 | AV:N/AC:M/Au:N/C:N/I:N/A:P |
- EPSS (exploitation in 30 days)
- 11.5% · top 3.9% of all CVEs (9 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.3.
Affected products
n/a
- affected n/a
References
5
- 20070606 IE 6 / MS Office Outlook Express Address Book Activex DoS (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 26836 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- outlook-addressbook-activex-dos(34755) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 20050301 IObjectSafety and Internet Explorer (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- http://browserfun.blogspot.com/2006/07/mobb-3-outlookexpressaddressbook_02.html (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2005-4832 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2005-4840)Record last updated .